COLUMBIA GLACIER 269 "In 1905 the front had retreated 160 feet from its position in 1899, and in 1908 it had advanced 112 feet beyond its position in 1905." In June, 1909, when revisited by Grant and Higgins this part of the front of the glacier had advanced 310 feet since 1908, and along parts of its front was advancing into the forest.1 The photographs by Gilbert in 1899 and by Grant in 1905, 1908 and June, 1909, from O L U M B A ~ - Fio. 32. THE HBATHXB ISLAND THBMTNTJB 07 COLUMBIA GLA.OLHR m JTJNB, 1910. Small letters show location of forest belts, heath, beach, etc. Capital letters show photographic stations, those not precisely located having a letter without symbol. exactly the same site, at the western end of the eastern timber belt already spoken of, show the retreat and advance at this point graphically (Pis. CVI, A, CVII and CVIII). It is also a noteworthy fact that the advance went on even more rapidly between June and August, 1909, than before, so that while Grant was able to photograph the glacier from this site in the former month, the National Geographic Society's expedition, two months later, found the site completely buried beneath the glacier, which had then advanced i Grant U. S. and Higgins, D. F., Glaciers of the Northern Fart of Prince William Sound, Bull. Amer. Geog. Soc., Vol. XLH, 1910. pp. 781-733.